FileOptimizer is a broad format file compression tool used to reduce file size without changing the quality, known as "lossless." This is done via wide variety of optimization and recompression tools and techniques. Original files are sent to the recycle bin for restoration in the event the uncompressed version is preferred. A long list of supported formats include audio/video (MP3, OGG, M4A), image (GIF, JPEG, PNG), office formats (DOCX, XLSX, ODT, PDF) and system files (DLL, EXE).

Supports drag-and-drop of files into the window or onto the program icon. Note that by default the program removes metadata for many file types. This information reduces overall file size and protects privacy but is important to some users (e.g. photographers) and file search tools.

A 64-bit version is available within the folder, the author reports the program is functional in WINE, and can be used on the command line.

Looks like version 11.40 phones home on every startup now, regardless of settings, probably trying to fetch some ads, well I'm not giving it a firewall rule so I'll be sticking with version 11.31 for the time being.

- Moved to a new HTTPS enabled website at https://nikkhokkho.sourceforge.io.- Switched code to support HTTP and HTTPS.- Added integrated ads display, since some users wanted to support FileOptimizer and do not have Paypal. You can remove if you want.- Added HideAds=false INI setting to remove ads.- Added GUI option to remove ads.- Disabled Windows error handling, so when a plugin crashes, FileOptimizer execution does not get stopped (Garret Wilson and others).- Disabled/deprecated themes because they are not stable. I will remove all asociated code in next release.- Reduced reminder frequency.- Workarrounded ImageMagick GIF processing flags (Devedse).- Fixed default process priority set to idle, even if it should be normal (RejZoR).- Avoided m7zRepacker treating .exe files.- Updated Leanify to 0.4.3.208 daily binaries.- Updated ffmpeg to 3.3.4 (TPS).- Updated ImageMagick flags (Devedse).- Updated ImageMagick to 7.0.7.9 with HDRI support.- Updated SQLite to 3.21.0 x86 and x64 Visual C++ 2017 custom builds.- Updated pingo to 0.92e x86 and x64 versions.- Tested with Windows 10 Fall Creators Update.- Tested with wine 2 under GalliumOS 2.1 / lubuntu 16.10.- Some minor optimizations and code cleanup.

Most images and files I post to portablefreeware go through this amazing compression tool. When compressing PDF files, I strongly recommend enabling the lossy DPI compression settings (usually around 150 or 200 is fine for most documents).

v7.60.1252 (04/26/2015)- Added INI option AlwaysOnTop=false to specify if FileOptimizer main Windows should stay always on top.- Updated Leanify 0.4.2.44 daily binaries.- Adding files not working for the x64 edition due to some aggressive optimizations in C++ Builder with -O3.

A similar open-source program (for images only) I have tried, which really does do what it says, is Caesium http://caesium.sourceforge.net/#mainI have only tried it with JPEG's, but really strained it by enlarging a central portion of compressed and uncompressed pictures by a ridiculous amount and in a side-by-side comparison, I was hard-pushed to see any difference.

Neat, but buggy. On some .exe's it will compressed them awesome... by deleting 99% of the file. It did this on my biz card reader software, and IBM social notes software (I'm sure you can Google them to try it out). Also, on some files the percentages listed were way off. The file size was correct, but not the compression ration.

It seems like, although this program supports all those file types, the parameters seem only to be applicable to swf and gz files. I couldn't figure out how to work this on a jpg file. Anyone got a tip for me?

Outstanding, especially on PNG files and when used in concert with RIOT (http://www.portablefreeware.com/index.php?id=1821). I've thrown a wide variety of files at this program and seen quite a bit of space saved. It's difficult to tell which supported files will compress by how much, but it's always important to test when posting web images or distributing files to large groups, saving a lot of bandwidth.